ClimbHome: Change misleading Seed assignment to nil value
This was "Seed = ClimbHome", but ClimbHome was a nil value.
This code still worked as the engine interpreted the nil value as empty string.
But it can be very misleading.
This changeset makes the Seed assignment more explicit by assigning the empty string directly.
The compability has been tested.
Target_Practice_-_Bazooka_easy
Target_Practice_-_Bazooka_hard
Target_Practice_-_Homing_Bee
Target_Practice_-_Grenade_easy
Target_Practice_-_Grenade_hard
Target_Practice_-_Cluster_Bomb
Target_Practice_-_Shotgun
Basic_Training_-_Sniper_Rifle
Challenge_-_Speed_Shoppa_-_Hedgelove
Challenge_-_Speed_Shoppa_-_Ropes
Challenge_-_Speed_Shoppa_-_ShoppaKing
User_Mission_-_Rope_Knock_Challenge
User_Mission_-_RCPlane_Challenge
User_Mission_-_That_Sinking_Feeling
ClimbHome